Quantized squeezing and even-odd asymmetry of trapped bosons (2009)
Hu, Shijie, Wen, Yuchuan, Yu, Yue, Normand, Bruce, Wang, Xiaoqun
We investigate the exact nature of the superfluid-to-Mott-insulator crossover for interacting bosons on an optical lattice in a one-dimensional, harmonic trap by high-precision density-matrix...
Cold-atoms on a two-dimensional square optical lattice with an alternating potential (2009)
Guo, Huaiming, Wen, Yuchuan, Feng, Shiping
The cold-atom on a two-dimensional square optical lattice is studied within the hard-core boson Hubbard model with an alternating potential. In terms of the quantum Monte Carlo method, it is shown...
Hu, Shijie, Wen, Yuchuan, Wang, Xiaoqun, Yu, Yue
Successive quantum transitions in an intermediate regime are shown to exist between the superfluid and Mott insulating states for interacting bosonic atoms in one dimension with a trapping potential....
We study the one-band Hubbard model at half filling with hopping asymmetry and its effective model at finite but large U up to the second order of tmix/U. Two variational wave functions, the...
Luttinger liquid with strong spin-orbital coupling and Zeeman splitting in quantum wires (2004)
Yu, Yue, Wen, Yuchuan, Li, Jinbin, Su, Zhaobin, Chui, S. T.
We study a one-dimensional interacting electron gas with the strong Rashba spin-orbit coupling and Zeeman splitting in a quantum well. A bosonization theory is developed for this system. The...